Are there any improvements in ESXi5 over ESXi 4.1 for iscsi storage?

[jrush1]

I have another post regarding slow iscsi performance in esxi 4.1( http://communities.vmware.com/thread/318609).  Is there anything in ESXi 5 that will greatly improve my iscsi storage performance?

[pcerda]

AFAIK,  there isn't real improvements to iSCSI performance in vSphere 5.0

The "What's new" document just talk about the "Port Binding" and "Jumbo Frame" settings are now available in vSphere Client.

Best Regards,

Patricio Cerda

[jrush1]

Thanks for the info!  I was told by another IT professional that ESXi 5 has some changes which make iscsi storage perfrom 10 times better in regards to IO but he didn't go into any details.

[pcerda]

Indeed there is many improvements about storage performance, but those improvements are not limited to iSCSI.

vSphere 5 supports an increase of IOPS, check out this links:

http://www.vmware.com/files/pdf/techpaper/Whats-New-VMware-vSphere-50-Performance-Technical-Whitepap...

http://www.vmware.com/files/pdf/techpaper/Whats-New-VMware-vSphere-50-Storage-Technical-Whitepaper.p...